<?php
/* --------------------------------------------------------------
   SettingsController.php 2019-10-24
   Gambio GmbH
   http://www.gambio.de
   Copyright (c) 2019 Gambio GmbH
   Released under the GNU General Public License (Version 2)
   [http://www.gnu.org/licenses/gpl-2.0.html]
   --------------------------------------------------------------
*/

namespace Gambio\StyleEdit\Core\Options\Entities;

use Exception;
use Gambio\StyleEdit\Core\Components\Option\Entities\OptionCollection;
use Gambio\StyleEdit\Core\Language\Entities\Language;
use Gambio\StyleEdit\Core\Repositories\ConfigurationRepository;
use Gambio\StyleEdit\Core\Repositories\Entities\Configuration;
use Gambio\StyleEdit\Core\SingletonPrototype;
use JsonSerializable;

/**
 * Class Variant
 * @package Gambio\StyleEdit\Core\Components
 */
abstract class AbstractOption implements JsonSerializable, OptionInterface
{
    /**
     * @var ConfigurationRepository
     */
    protected $configurationRepository;
    /**
     * @var mixed
     */
    protected $default;
    /**
     * @var string|null
     */
    protected $for;
    /**
     * @var string
     */
    protected $group;
    /**
     * @var bool
     */
    protected $hidden = false;
    /**
     * @var string
     */
    protected $id;
    /**
     * @var string
     */
    protected $labelId;
    /**
     * @var boolean
     */
    protected $requiresReload;
    /**
     * @var string
     */
    protected $selector;
    /**
     * @var string|null
     */
    protected $translatable = false;
    /**
     * @var string
     */
    protected $type;
    /**
     * @var mixed
     */
    protected $value;
    
    
    /**
     * AbstractOption constructor.
     *
     * @param $id
     * @param $default
     * @param $value
     * @param $selector
     * @param $for
     * @param $translatable
     * @param $type
     * @param $group
     * @param $requiresReload
     * @param $labelId
     */
    public function __construct(
        string $id = null,
        string $type = null,
        string $labelId = null,
        string $group = null,
        string $selector = null,
        string $for = null,
        bool $translatable = null,
        bool $requiresReload = null,
        $default = null,
        $value = null
    ) {
        $this->id             = $id;
        $this->default        = $default;
        $this->value          = $value;
        $this->selector       = $selector;
        $this->for            = $for;
        $this->translatable   = $translatable ?? false;
        $this->type           = $type;
        $this->group          = $group;
        $this->requiresReload = $requiresReload ?? false;
        $this->labelId        = $labelId;
    }
    
    /**
     * @param                              $jsonObject
     * @param string                       $prefix
     * @param ConfigurationRepository|null $configurationRepository
     *
     * @return bool|OptionCollection|mixed
     * @throws \ReflectionException
     */
    public static function createFromJsonObject(
        $jsonObject,
        $prefix = '',
        ConfigurationRepository $configurationRepository = null
    ) {
        $optionTypeName = str_replace('-', '', ucwords($jsonObject->type, '-')) . 'Option';
        
        //use the prototype as classloader to create specialized instances of subtypes
        $instance = SingletonPrototype::instance()->get($optionTypeName);
        
        $prefix = $prefix ? $prefix . '-' : '';
        
        if ($instance instanceof self) {
            $jsonObject->id                    = $prefix . $jsonObject->id;
            $instance->configurationRepository = $configurationRepository;
            $instance->initializeFromJsonObject($jsonObject);
            
            return $instance;
        }
        
        if ($instance instanceof OptionCollection) {
            $result = new OptionCollection();
            $prefix = strtolower($prefix . $jsonObject->id);
            foreach ($instance as &$option) {
                $result->addItem(self::createFromJsonObject($option->jsonSerialize(),
                                                            $prefix,
                                                            $configurationRepository));
            }
            
            return $result;
        }
        
        throw new Exception('Invalid Option object! Type:[' . $jsonObject->type . ']');
    }
    
    
    /**
     * @param $object
     *
     * @throws Exception
     */
    public function initializeFromJsonObject($object): void
    {
        if (property_exists($object, 'group') && $object->group) {
            $this->group = $object->group;
        }
        
        if (!isset($object->value) && isset($object->id)) {
            
            if ($this->configurationRepository()) {
                $configuration = $this->configurationRepository()->getJsonConfigurationFrom($object->id);
                
                if (!$configuration) {
                    
                    if (!($this instanceof \Gambio\StyleEdit\Core\Options\Interfaces\ComponentGroupOptionInterface)) {
                        
                        $configuration = Configuration::createFromJson((Object)[
                            'name'   => $object->id,
                            'value'  => $object->default ?? null,
                            'group'  => $this->group() ?? 'template',
                            'type'   => $this->type(),
                            'hidden' => $this->hidden()
                        ]);
                        
                        $this->configurationRepository()->saveJsonConfigurationFrom($configuration);
                        $object->value = $configuration->value();
                    } else {
                        $object->value = $object->default;
                    }
                } else {
                    $object->value = $configuration->value();
                    if (!$configuration->type()) {
                        $cfg       = $configuration->jsonSerialize();
                        $cfg->type = $this->type();
                        $this->configurationRepository()
                            ->saveJsonConfigurationFrom(Configuration::createFromJson($cfg));
                    }
                }
            } elseif (property_exists($object, 'default')) {
                $object->value = $object->default;
            } else {
                $object->value = null;
            }
        }
        
        $this->requiresReload = isset($object->requiresReload) && $object->requiresReload === true;
        
        if (isset($object->id)) {
            $this->id = $object->id;
        }
        
        if (isset($object->type)) {
            $this->type = $object->type;
        }
        
        if (isset($object->default)) {
            $this->default = $object->default;
        }
        
        if (isset($object->selector)) {
            $this->selector = $object->selector;
        }
        
        if (isset($object->for)) {
            $this->for = $object->for;
        }
        
        if (isset($object->translatable)) {
            $this->translatable = $object->translatable === true;
        }
        
        if (isset($object->value) && $this->isValid($object->value)) {
            $this->value = $this->parseValue($object->value);
        }
        
        if (isset($object->labelId)) {
            $this->labelId = $object->labelId;
        }
        
        if (isset($object->hidden)) {
            $this->hidden = $object->hidden;
        }
    }
    
    
    /**
     * @return ConfigurationRepository
     * @throws Exception
     */
    protected function configurationRepository(): ?ConfigurationRepository
    {
        return $this->configurationRepository;
    }
    
    
    /**
     * @param ConfigurationRepository $configurationRepository
     */
    public function setConfigurationRepository(ConfigurationRepository $configurationRepository)
    {
        $this->configurationRepository = $configurationRepository;
    }
    
    
    /**
     * @return string|null
     */
    public function group(): ?string
    {
        return $this->group;
    }
    
    
    /**
     * @return bool|null
     */
    public function hidden(): bool
    {
        return $this->hidden;
    }
    
    
    /**
     * @param $value
     *
     * @return boolean
     */
    abstract protected function isValid($value): bool;
    
    
    /**
     * @param $value
     *
     * @return mixed
     */
    abstract protected function parseValue($value);
    
    
    /**
     * @param $configurationRepository
     *
     * @return $this
     */
    public function withConfigurationRepository(?ConfigurationRepository $configurationRepository): self
    {
        $this->configurationRepository = $configurationRepository;
        
        return $this;
    }
    
    
    /**
     * Specify data which should be serialized to JSON
     * @link  https://php.net/manual/en/jsonserializable.jsonserialize.php
     * @return mixed data which can be serialized by <b>json_encode</b>,
     * which is a value of any type other than a resource.
     * @since 5.4.0
     */
    public function jsonSerialize()
    {
        $result = [];
        if ($this->id()) {
            $result['id'] = $this->id();
        }
        
        // We could have "boolean" values so that we need to check if is
        // not null instead of check only if is true/false
        if ($this->defaultValue() !== null) {
            // Changed from $this->defaultValue() to $this->default
            // because the defaultValue method was casting the property to string and
            // if we have a boolean property it will be casted to "1" or "0"
            $result['default'] = $this->default;
        }
        
        $result['type'] = $this->type();
        if ($this->translatable()) {
            $result['translatable'] = $this->translatable();
        }
        
        // We could have "boolean" values so that we need to check if is
        // not null instead of check only if is true/false
        if ($this->value() !== null) {
            $result['value'] = $this->value();
        }
        
        if ($this->selector()) {
            $result['selector'] = $this->selector();
        }
        
        if ($this->group()) {
            $result['group'] = $this->group();
        }
        
        if ($this->requiresReload()) {
            $result['requiresReload'] = true;
        }
        
        if ($this->labelId()) {
            $result['labelId'] = $this->labelId();
        }
        
        if ($this->hidden()) {
            $result['hidden'] = $this->hidden();
        }
        
        return (object)$result;
    }
    
    
    /**
     * @return string
     */
    public function id(): ?string
    {
        return $this->id;
    }
    
    
    /**
     * @param string $id
     */
    protected function setId(string $id): void
    {
        $this->id = $id;
    }
    
    
    /**
     * @return mixed
     */
    public function defaultValue()
    {
        return $this->default;
    }
    
    
    /**
     * @return bool|null
     */
    public function translatable(): bool
    {
        return $this->translatable;
    }
    
    
    /**
     * @param Language|null $language
     *
     * @return mixed
     */
    public function value(?Language $language = null)
    {
        $value = $this->value ?? $this->defaultValue();
        if (!empty($language) && is_object($value)) {
            if (property_exists($value, $language->code())) {
                return $value->{$language->code()};
            } else {
                return null;
            }
        }
        
        return $value;
    }
    
    
    /**
     * @return mixed
     */
    public function selector()
    {
        return $this->selector;
    }
    
    
    /**
     * @return bool
     */
    public function requiresReload(): bool
    {
        return $this->requiresReload ?? false;
    }
    
    
    /**
     * @return string|null
     */
    public function labelId(): ?string
    {
        return $this->labelId;
    }
    
    
    /**
     * @return string|null
     */
    public function for(): ?string
    {
        return $this->for;
    }
}